Tube-number record
11DH7
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11DH7 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Philips, construction Display / CRT, maximum plate voltage 1200 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassCathode Ray Tube
Filament6.3 V @ 87.1 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle gun
Filament / Heater
Heater NotesLow power 0.5W cathode
Absolute Maximum Ratings
Plate Voltage1200 V
Plate Dissipation0.5 W
Grid 2 Voltage1200 V
Grid 1 Voltage-70 V
H-C Voltage20 V
Audio Performance
Key Features
- 0.5W low power cathode
- Specially for transistor applications
- Adapted Grid 1
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard focus | 1200 V | — | — | — | 0.0214 mA |
Application Notes
The tube is a variant of type DH 7-78, designed for transistorized oscilloscope circuits.
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